Pediatric Acute Abdominal Pain - Differential Diagnosis Algorithm

Generalized/Migratory:

 • Intussusception

 • Gastroenteritis

 • Viral Illness

 • Diabetic Ketoacidosis

 • Bowel Obstruction

 • Henoch-Schonlein Purpura

 • Malrotation/Volvulus

 • Urinary Tract Infection

 • Peritonitis

 • Somatization

 • Sickle Cell Crisis

 • Ileus

 • Infantile Colic

Epigastric:

 • Gastritis

 • Peptic Ulcer Disease

 • Pancreatitis

 • Gastroesophageal Reflux Disease 

Right Upper Quadrant:

 • Hepatitis

 • Cholelithiasis

 • Cholecystitis

 • Pyelonephritis

 • Right Lower Lobe Pneumonia

Left Upper Quadrant:

 • Viral Illness with Splenic Enlargement/Rupture

 • Pyelonephritis

 • Left Lower Lobe Pneumonia

Right Lower Quadrant:

 • Appendicitis

 • Ovarian Cyst

 • Ovarian Torsion

 • Ectopic Pregnancy

 • Pelvic Inflammatory Disease

 • Nephrolithiasis

 • Dysmenorrhea

Left Lower Quadrant:

 • Ovarian Cyst

 • Ovarian Torsion

 • Ectopic Pregnancy

 • Pelvic Inflammatory Disease

 • Nephrolithiasis



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